4XJA

Crystal structure of the NanB sialidase from streptococcus pneumoniae in complex with 5-acetamido-2,3-difluoro-3-hydroxy-6-[1,2,3-trihydroxypropyl]oxane-2-carboxylic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 3.1 of the entry. See complete history


Literature

`The Hunt for Serendipitous Allosteric Sites: Discovery of a novel allosteric inhibitor of the bacterial sialidase NanB

Rogers, G.W.Brear, P.Yang, L.Chen, A.S.Mitchell, J.B.O.Taylor, G.L.Westwood, N.J.

To be published.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sialidase B658Streptococcus pneumoniae TIGR4Mutation(s): 1 
Gene Names: nanBSP_1687
EC: 3.2.1.18
UniProt
Find proteins for Q54727 (Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4))
Explore Q54727 
Go to UniProtKB:  Q54727
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ54727
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SFJ
Query on SFJ

Download Ideal Coordinates CCD File 
F [auth A](2R,3R,4R,5R,6R)-5-acetamido-2,3-difluoro-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]tetrahydro-2H-pyran-2-carboxylic acid
C11 H17 F2 N O8
HMALKZAXODOYOP-DAXAGCIGSA-N
OPX
Query on OPX

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B [auth A](1s,3R,4S)-1-[(cyclohexylamino)methyl]-3,4-dihydroxycyclopentanesulfonic acid
C12 H23 N O5 S
RMLVAYWMDDDXFB-ZSBIGDGJSA-N
PO4
Query on PO4

Download Ideal Coordinates CCD File 
C [auth A]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
DMS
Query on DMS

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A]
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.586α = 90
b = 82.556β = 90
c = 116.654γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
PHASERphasing
PDB_EXTRACTdata extraction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data

  • Released Date: 2016-01-20 
  • Deposition Author(s): Brear, P.

Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research CouncilUnited Kingdom--
SULSAUnited Kingdom--

Revision History  (Full details and data files)

  • Version 1.0: 2016-01-20
    Type: Initial release
  • Version 2.0: 2017-08-30
    Changes: Atomic model, Author supporting evidence, Data collection, Derived calculations
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Derived calculations, Structure summary
  • Version 3.1: 2024-01-10
    Changes: Data collection, Database references, Refinement description, Structure summary